Lefko, CA Weather Forecast
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Lefko Weather Forecast
| TODAY | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | TUESDAY |
| Sunny | Clear | Sunny | Partly Cloudy | Partly Cloudy | Mostly Clear | Clear | Clear | Sunny | Mostly Clear | Mostly Clear | Sunny |
| Hi: 90°FHi: 32°C | Lo: 63°FLo: 17°C | Hi: 90°FHi: 32°C | Lo: 63°FLo: 17°C | Hi: 86°FHi: 30°C | Lo: 55°FLo: 13°C | Hi: 80°FHi: 27°C Lo: 53°FLo: 12°C | Hi: 80°FHi: 27°C Lo: 53°FLo: 12°C | Hi: 86°FHi: 30°C | Hi: 86°FHi: 30°C Lo: 56°FLo: 13°C | Hi: 86°FHi: 30°C Lo: 56°FLo: 13°C | Hi: 80°FHi: 27°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 239 AM PDT Wed Aug 19 2026 

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Issued: 434 AM PDT Wed Aug 19 2026
Key Messages
- Above normal temperatures are expected the next couple of days before trending back near normal Friday onward
- Dry conditions and typical afternoon breezes continue, but Friday and Saturday will see an uptick with enhanced breezes
- Isolated thunderstorms are possible Friday afternoon along the Cascades and possibly eastside areas through the evening hours
- Areas of smoke remain possible across western Siskiyou County and parts of Klamath and Lake counties d...
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